Just answer part (ii) perfectly , PLEASE do not upload any solution that is already available ,I have wasted all my posts and time to seek its answer. If you cannot answer part (ii) then leave it for someone else. Do not attach the solution already available on chegg.

I will surely upvote your efforts. Please take as much time you want to take but majorly solve its part ii properly

A quaternary mixture with 4 mole% component A, 40 mole% component B, 50 mole% component C and component D is to be distillate it at 1 atm with 98% component B and 1% of component C recovered in the distillate and 99% of component C in the bottom streams. Given _AC=6.46, _BC=2.48 and _DC=0.41. Calculate: (i) The composition of top and bottom products. [3.0 marks]

• (i)

F=100 moles/hr

Components	Xf	F Xf	D	Xd	B	Xb
Pentane	0.04	4	4	0.092	0	0
Hexane	0.4	40	39.2	0.897	0.8	0.014
Heptane	0.5	50	0.5	0.011	49.5	0.879
Octane	0.06	6	0	0	6	0.107
Total	1	100	43.7	1	56.3	1

(ii) What is the minimum reflux ratio for a liquid feed at the boiling point (T=80^oC)? [3.0 marks]

Just answer part (ii) perfectly. do not attach those two graphs that are already available. they are not calculating anything and are just wrong